Results 71 to 80 of about 7,327 (250)

Research Status of Substation Vulnerability Under the Coupling Effect of Earthquake and Strong Wind

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
With the progressive advancement of China’s power industry toward higher voltage levels and larger capacity, substations have become critical infrastructures whose resilience to natural disasters requires urgent enhancement. In particular, under the coupled effects of multiple hazards such as earthquakes and strong winds, the optimization of substation
Yihua Gao, Hong Liu, Yijie Wang, Bo Wen, Jiajun Fu, Yi Shan   +5 more
wiley   +1 more source

HVDC Submarine Power Cables in the World: State-of-the-Art Knowledge [PDF]

, 2015
This report is the first deliverable of the OTG ("Offshore Transnational Grid") Work Package (2015-2016), which is intended to identify and analyse the engineering and geopolitical challenges for realising a transcontinental energy interconnection ...
ARDELEAN MIRCEA, MINNEBO PHILIP
core   +1 more source

Detection of Transient Decomposition Products of CF3SO2F and C4F7N via OES Under Spark and Glow Discharges

High Voltage, Volume 10, Issue 6, Page 1582-1592, December 2025.
ABSTRACT The optical emission spectra (OES) reflect the presence of excited states in the gaseous discharge, which are directly linked to the decomposition characteristics of insulating gases. In this study, a pin/rod–plate discharge reactor driven by either a high‐voltage direct current (DC) generator or a pulsed generator was developed to establish ...
Chenxi Man, Jincong Wang, Keli Gao, Yiheng Li, Yumin Zhang, Xuekai Pei   +5 more
wiley   +1 more source

Partial Discharge Detection Method of Fibre‐Composed HVDC Submarine Cable Based on φ‐OTDR and Hilbert Demodulation

High Voltage, Volume 10, Issue 6, Page 1380-1389, December 2025.
ABSTRACT Partial discharge (PD) is the indicator of the insulation defect in cables. However, the pulse current method, which is widely adopted in land cables, cannot obtain PD signals of high‐voltage direct current (HVDC) submarine cables due to attenuation and installation position.
Hang Wang, Haoran Zhang, Lei Li, Shuai Yang, Jun Chen, Bangdou Huang, Cheng Zhang, Tao Shao   +7 more
wiley   +1 more source

PROPOSAL OF NEW K-FACTOR FUNCTION IN LIGHTNING IMPULSE TEST FOR ELECTRIC POWER EQUIPMENT [PDF]

, 2017
Ultra high voltage (UHV) systems are increasingly being planned and constructed, hence studies are promoted on the standard for high-voltage test techniques for UHV-class equipment.
Hikita M., Okabe S., Tsuboi T., Ueta G.   +3 more
core   +1 more source

Mechanical vibration state and its defect severity development trend prediction for gas‐insulated switchgear equipment: Attention‐bidirectional gated recurrent unit model construction and experimental verification

High Voltage, Volume 10, Issue 4, Page 831-844, August 2025.
Abstract Mechanical vibration defect is the key factor leading to sudden failure of gas‐insulated switchgear (GIS) equipment. It is important to realise effective prediction of the mechanical vibration state development trend of GIS equipment in order to improve its active safety protection level.
Xu Li, Jian Hao, Ruijin Liao, Yao Zhong, Ying Feng, Ruilei Gong   +5 more
wiley   +1 more source

A novel GIS breakdown location method based on natural frequency of transient voltage

High Voltage, Volume 10, Issue 4, Page 856-875, August 2025.
Abstract During on‐site withstand voltage tests of gas‐insulated switchgears (GIS), once a breakdown occurs, it is hard to locate the breakdown position due to the intricate branch structures and minimal breakdown energy. The existing methods may require the placement of a large number of sensors with unsatisfactory accuracy, which adversely affects ...
Qiang Sun, Dengwei Ding, Yanpeng Ge, Ziwei Zhang, Wensheng Gao, Weidong Liu, Ke Zhao, Bo Liu, Lei Wang, Jiaqi Qu   +9 more
wiley   +1 more source

Review of Insulation Defect Detection Methods for a Gas-Insulated Switchgear

Energies
Gas-insulated switchgear (GIS) is a critical component of modern power systems. During operation, internal defects increase the probability of partial discharge and flashover within the insulation system, thereby constituting a major cause of equipment ...
Tengfei Li, Qin Xu, Kai Gao, Zhiwen Yuan, Junjie Chen, Chuanyang Li   +5 more
doaj   +1 more source

GIS partial discharge pattern recognition via a novel capsule deep graph convolutional network

IET Generation, Transmission & Distribution, 2022
Deep learning (DL) has attracted significant attention in partial discharge (PD) pattern recognition of gas‐insulated switchgear (GIS). However, the existing DL method extracts numerical information and ignores spatial correlation information.
Yanxin Wang, Jing Yan, Xinyu Ye, Zhenkang Qi, Jianhua Wang, Yingsan Geng   +5 more
doaj   +1 more source

Nanocrystalline based Mitigation Technique for Very Fast Transient over Voltages in Gas Insulated Substations [PDF]

, 2021
: in gas insulated substations, issue of very fast transient over voltages is very familiar problem because of its effects on live ultra-high voltage equipment.
et. al., R.Durga Rao,
core   +1 more source